When I try running Code::Blocks, I get the following error message:

Another program instance is already running. Code::Blocks is currently configured to only allow one running instance.

You can access this Setting under the menu item 'Environment'.

I had a similar problem before with e.g. Google Chrome when I didn't shut it down correctly, but for Chrome, I managed to locate the lock file, delete it, and it solves the problem.

For Code::Blocks, I looked around and tried several proposed solutions, but none of them worked:

• look for the process (ps -A | grep 'codeblocks') and kill the process

  I found a stray process this way, but killing it did not help.

• allow multiple instances Setting under 'Environment' menu

  I can not run any instance in the first place, so can not access the menu.

  I tried running Code::Blocks from terminal with codeblocks --multiple-instances but that parameter must have been abandoned some time ago, as it is no longer recognized.

• I looked all over for some kind of a lock file, to try and delete it

  Unfortunately, I didn't find anything that looked to me distinctly like the lock file :(

Did anybody encounter a similar problem, and knows how to solve it? Any help would be great, as searching around only revealed people with the same problem unsolved, or solved by one of the solutions I outlined above (which didn't help).

I'm running 64b Fedora17.

解决方法：

Uh, sorry everybody, looks like I have this annoying habit of finding a solution within minutes of complaining about the problem, instead in my "look for solution" phase.

I found the lock file to delete and fix the problem: deleting /tmp/Code::Blocks-username fixes the problem.

Some further solutions are outlined in the Code::Blocks official forums, including how to change the settings from "allow single instance" to "allow multiple instance" without actually running Code::Blocks.

主要是看http://forums.codeblocks.org/index.php?topic=8529.0